Kirkhill-TA utilizes Intelex's Environmental Management System. Kirkhill-TA is a subsidiary of publicly traded Esterline Technologies (NYSE: ESL). Esterline Technologies is a specialized manufacturing company serving principally aerospace and defense markets. In 1999, Esterline Technologies combined the resources of two of the world’s leading companies in engineered elastomer and aerospace clamping solutions: Kirkhill Rubber Company and TA Mfg. to form Kirkhill-TA.